From c7f610f489a43941f6b472dc5ed7f3fb0a526428 Mon Sep 17 00:00:00 2001
From: Martin Pitt <martin@piware.de>
Date: Sat, 26 Dec 2020 08:08:46 +0100
Subject: [PATCH] Fix po2json usage help

The output file is an option, not a positional argument.

`opts.args` is undefined if there are no positional arguments, so that
just calling `po/po2json` crashed with

    TypeError: Cannot read property 'length' of undefined
---
 po/po2json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/po/po2json b/po/po2json
index d521f30..690d7d0 100755
--- a/po/po2json
+++ b/po/po2json
@@ -6,7 +6,7 @@ function fatal(message, code) {
 }
 
 function usage() {
-    console.log("usage: po2json [--module=template.js] input output");
+    console.log("usage: po2json [--module=template.js] [--output=output.js] input");
     process.exit(2);
 }
 
@@ -29,7 +29,7 @@ var opts = stdio.getopt({
     output: { key: "o", args: 1, description: "Output file", default: "" },
 });
 
-if (opts.args.length != 1) {
+if (!opts.args || opts.args.length != 1) {
     usage();
 }